<template>
  <div class="todo-container">
    <div class="todo-wrap">
      <Header :addItem="addItem" />
      <List
        :todoList="todoList"
        :deletes="deletes"
        :checkboxChange="checkboxChange"
      />
      <Footer  
      :todoList='todoList'  
      :checkboxAllChange='checkboxAllChange'
      :clearAll='clearAll'
      />
    </div>
  </div>
</template>

<script>

import Header from "./components/Header";
import Footer from "./components/Footer";
import List from "./components/List";
export default {
  name: "App",
  data() {
    return {
      todoList: [],
    };
  },
  components: {
    Header,
    Footer,
    List,
  },
  methods: {
    //添加函数
    addItem(value) {
      this.todoList.unshift(value);
    },
    //删除函数
    deletes(id) {
      console.log(id);
      this.todoList = this.todoList.filter((item) => {
        return !item.id.includes(id);
      });
    },
    //多选框点击逻辑
    checkboxChange(id) {
      this.todoList = this.todoList.map((item) => {
        return item.id === id ? { ...item, done:!item.done } : item;
      });
    },
    //改变所有多选个逻辑
    checkboxAllChange(boolean){
            this.todoList = this.todoList.map(item=>{
              return {...item,done:boolean}
            })

    },
    //清除所有已完成
    clearAll(){
      this.todoList= this.todoList.filter(item=>!item.done)
    }
  },
  //挂载完成后 将数据绑定到localStirage中
  mounted(){
    this.todoList = JSON.parse(localStorage.getItem('todoList') ||" [] ") 
  },
  //监听数据变化 当todolist变化的时候 触发handler函数
  watch:{
    todoList:{
      deep:true,
      handler(){
        localStorage.setItem('todoList',JSON.stringify(this.todoList))
      }
    }
  }
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>